BindingSource.DataSource 属性

public:
 property System::Object ^ DataSource { System::Object ^ get(); void set(System::Object ^ value); };

public object DataSource { get; set; }

public object? DataSource { get; set; }

member this.DataSource : obj with get, set

Public Property DataSource As Object

属性值

作为数据源的 Object。 默认值为 null。

示例

下面的代码示例将客户列表分配给DataSourceBindingSource组件的 。 本代码示例是 如何：使用 BindingSource ResetItem 方法引发更改通知中提供的更大示例的一部分。

void Form1_Load( Object^ /*sender*/, EventArgs^ /*e*/ )
{
   // Create and populate the list of DemoCustomer objects
   // which will supply data to the DataGridView.
   List< DemoCustomer^ >^ customerList = gcnew List< DemoCustomer^ >;
   customerList->Add( DemoCustomer::CreateNewCustomer() );
   customerList->Add( DemoCustomer::CreateNewCustomer() );
   customerList->Add( DemoCustomer::CreateNewCustomer() );
   
   // Bind the list to the BindingSource.
   this->customersBindingSource->DataSource = customerList;
   
   // Attach the BindingSource to the DataGridView.
   this->customersDataGridView->DataSource =
      this->customersBindingSource;
}

private void Form1_Load(System.Object sender, System.EventArgs e)
{
    // Create and populate the list of DemoCustomer objects
    // which will supply data to the DataGridView.
    List<DemoCustomer> customerList = new List<DemoCustomer>();
    customerList.Add(DemoCustomer.CreateNewCustomer());
    customerList.Add(DemoCustomer.CreateNewCustomer());
    customerList.Add(DemoCustomer.CreateNewCustomer());

    // Bind the list to the BindingSource.
    this.customersBindingSource.DataSource = customerList;

    // Attach the BindingSource to the DataGridView.
    this.customersDataGridView.DataSource = 
        this.customersBindingSource;
}

Private Sub Form1_Load(ByVal sender As System.Object, _
    ByVal e As System.EventArgs) Handles Me.Load
    ' Create and populate the list of DemoCustomer objects
    ' which will supply data to the DataGridView.
    Dim customerList As List(Of DemoCustomer) = _
    New List(Of DemoCustomer)
    customerList.Add(DemoCustomer.CreateNewCustomer())
    customerList.Add(DemoCustomer.CreateNewCustomer())
    customerList.Add(DemoCustomer.CreateNewCustomer())

    ' Bind the list to the BindingSource.
    Me.customersBindingSource.DataSource = customerList

    ' Attach the BindingSource to the DataGridView.
    Me.customersDataGridView.DataSource = Me.customersBindingSource
End Sub

注解

属性 DataSource 可以设置为多个数据源，包括类型、对象和类型列表。 生成的数据源将以列表的形式公开。 下表显示了一些常见数据源和生成的列表评估。

此外， DataSource 可以设置为其他列表类型，例如 IListSource 和 ITypedList ， BindingSource 将相应地处理它们。 在这种情况下，列表中包含的类型应具有无参数构造函数。

设置数据源时，如果提供的引用包含多个列表或表，则必须将 DataMember 属性设置为指定要绑定到的列表的字符串。 设置此属性将 DataSourceChanged 引发 事件。

属性 DataSource 是 类的默认属性 BindingSource 。

另请参阅

• DataMember
• IList
• IListSource